Tractatus de morbis cutaneis.

Lorry is regarded as the founder of French dermatology. A pupil of Jean Astruc, his most important work was his Tractatus, in which he attempted the classification of diseases on the basis of essential relations, their physiological, pathological, and etiological similarities. It was the first modern text on the subject, and the last major work on dermatology to be published in Latin.